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AssigneeMinnesota Mining and Manufacturing Company
InventorsMartin B. Wolk, Thomas A. Isberg, Kenneth L. Hanzalik, Jeffrey C. Chang, Richard E. Bills, William V. Dower, Terrance P. Smith
Estimating the term…
Color filter elements are prepared by the laser induced thermal transfer of colorant from a color donor to a transparent, non-birefringent substrate such as glass or polymeric film. Transparent pigments which are less prone to migration, more thermally stable, and considerably more lightfast than dyes can be used to prepare the color filter elements of this invention. Color filter elements are useful for elements in color displays such as liquid crystal display devices.
A method for the manufacture of a color filter element on a substrate comprising thermally mass transferring a transparent pigment colorant from a thermal mass transfer colorant donor to the substrate to form a pattern of at least one color on said substrate, and then associating a liquid crystal display device with said pattern so that upon electronically addressing of liquid crystal within said liquid crystal display device, at least a portion of said pattern of at least one color becomes visible.
A method for the manufacture of a color filter element on a substrate comprising the laser induced thermal transfer of colorant from a colorant donor to the substrate, said substrate comprising a black matrix on at least one surface of said substrate, said black matrix having window areas on portions thereof, and then thermally transferring a colorant from a colorant donor to the substrate to form a pattern of at least one color on said substrate within said matrix, and then associating a liquid crystal display device with said pattern so that upon electronically addressing of liquid crystal within said liquid crystal display device, at least a portion of said pattern of at least one color becomes visible.
A method for the manufacture of a color filter element on a non-birefringent substrate comprising the steps of:
A method for the manufacture of a color filter element on a substrate comprising thermally mass transferring a transparent pigment colorant from a colorant donor element to the substrate to form a pattern of at least one color on said substrate, and then associating a transparent electrically conducting layer with said pattern.
Dependencies are inferred from the claim text.